M22: Globular Cluster in Sagittarius
| Right Ascension |
18 : 36.4 (h:m) |
| Declination |
-23 : 54 (deg:m) |
| Distance |
10.1 (kly) |
| Visual Brightness |
5.1 (mag) |
| Apparent Dimension |
24.0 (arc min) |
More information
on M22
| 160 second (20 x 8 sec.) exposure using the PC camera
with Dave Allmon's QCV2 software on the 8" Newtonian. For this image,
the air cooling fan was running. My goal was to assess the degree
to which vibration from the fan affected image quality.
Dark frame processing, image alignment, and stacking was done with
Dave Allmon's DarkGen program.
Final processing performed with Photoshop.
8/21/2000 |
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| 160 second (20 x 8 sec.) exposure using the PC camera with Dave
Allmon's QCV2 software on the 8" Newtonian. For this image, the air
cooling fan was not running.
Dark frame processing, image alignment, and stacking was done with
Dave Allmon's DarkGen program.
Final processing performed with Photoshop.
8/21/2000 |
 |
120 second (10 x 12 sec.) exposure using the PC camera with Dave
Allmon's QCV2 software on the 8" Newtonian.
This image run began with 20 exposures, but due to the longer exposure
time, several frames reveal drift and were deleted. 10 frames finally
survived.
Dark frame processing, image alignment, and stacking was done with
Dave Allmon's DarkGen program.
Final processing performed with Photoshop.
8/25/2000 |
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